the wildly popular pick-me-up, 5-hour energy, now linked to the deaths of 13 people. what you need to know. >>> and it is tough to take it this hour. why hitting that snooze button turns out to be a really bad idea. >>> good morning, everyone. we have new details this morning on the sex scandal that brought down former cia director david petraeus. we've learned the name of that mystery agent from the fbi who first exposed the petraeus affair. he is fbi veteran agent frederick humphries. notorious for sending shirtless photos of himself to another key player in the scandal. >> he says it was just a lighthearted joke. that woman would be jill kelly, seen on the right, which claims she was threatened by petraeus' lover. she has been stripped of her special access to macdill air force base in tampa. and paula broadwell is under investigation for storing military documents, on her computer. and for the first time president obama has weighed in on this mess. preeti arla has the latest. >> reporter: president obama walked into the east room of the white house for his first p